I have a boatload of problems with my fish... Just yesterday, Morgana started getting bubbles underneath her eyes, not popeye, literally bubbles underneath her eyes. Today, I noticed some scale disc oration on top of Rose's and Versailles ' head. (Both blue) is this hole in the head disease? It doesn't really look like a hole, just weirdly colored.

Vita-chem is okay to use all the time. It is a supplement, not a medication. Though it can be hard to find, I absolutely swear by it for healthy, robust fish. I also did a google search and found a forum where they discussed the use of vita-chem for hole in the head disease in betta fish just a few days ago, as before that I didn't even know that disease existed!

Honestly, like I said, I don't really know a lot about fish diseases. I don't know how to cure hole in the head disease and if aquarium salt would do anything at all. :(